think that they could get someone from among us to do us harm. >> reporter: in the late '06s, f.b.i. director j. edgar hoover seemed determined to destroy dr. king. everyone was in the movement within the movement's leadership knew it. >> we always operated under the assumption that we were under the microscope and that our telephones were tapped. >> reporter: withers marched with dr. king, ate with him, sat in on strategy sessions with leaders of the movement. a known and trusted face, he had access to w a camera. withers' daughter is as shocked as everyone. >> out of kharker if for my father. that's not a representative of who he was as a man and what he stood for. >> reporter: memphis planned to open an earnest withers museum next month. his photos some powerfully clear but not his motives. mark strassmann, cbs news, atlanta. >> couric: and that's the "cbs evening news" for tonight. i'm katie couric. thank you for watching. see you tomorrow. good night. captioning sponsored by cbs captioned by media access group at wgbh access.wgbh.org >>> from the first local station with news in